Friday, November 11, 2016

classical mechanics - Why do rockets have multiple stages?


What is the advantage for rockets to have multiple stages?


Wouldn't a single stage with the same amount of fuel weigh less?


Note I would like a quantitative answer, if possible :-)



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Answer



As Omega Centauri wrote, it is mainly about removing unused tank mass; for numbers, see Wikipedia article about CioĊ‚kowski's equation, especially the example there.


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